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Method of quickly preparing calcium phosphate coating containing third-party beneficial ions

A calcium phosphate, coating technology, applied in coating, medical science, prosthesis, etc., can solve the problem of unsuitable spraying method

Inactive Publication Date: 2014-08-06
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the plasma spraying method is commonly used in the industry, but this method is generally only suitable for substrates without complex porous three-dimensional structures
For substrates with complex structures, this spraying method is not suitable
At the same time, this method is only suitable for material substrates that can withstand high temperatures.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0011] 1. Add 0.225g hydrous calcium chloride, 0.01g hydrous strontium chloride, and 0.204g potassium dihydrogen phosphate to 200mL deionized water, and add sodium bicarbonate to adjust the pH to 6.5.

[0012] 2. Put the hydroxyapatite stent into the solution, and use an 800W microwave oven to heat the solution for 5 minutes.

[0013] 3. The formed coating is strontium-containing calcium phosphate coating.

example 2

[0015] 1. Add 0.225g hydrous calcium chloride, 0.01g hydrous strontium chloride, and 0.204g potassium dihydrogen phosphate to 200mL deionized water, and add sodium bicarbonate to adjust the pH to 6.5.

[0016] 2. Put the titanium stent treated with sodium hydroxide solution into the solution, and use a 900W microwave oven to heat the solution for 5 minutes.

[0017] 3. The formed coating is strontium-containing calcium phosphate coating.

example 3

[0019] 1. Add 0.11g of calcium chloride in water, 0.102g of sodium polyphosphate, and 0.01g of magnesium chloride in 100mL of deionized water to produce white precipitate in a very short time.

[0020] 2. Use concentrated hydrochloric acid to lower the pH of the solution to 4.5 to completely dissolve the white precipitate.

[0021] 3. Put the titanium stent whose surface has been treated with sodium hydroxide solution into the solution, and use an 800W microwave oven to heat the solution for 4 minutes.

[0022] 4. The formed coating is a calcium polyphosphate coating containing magnesium.

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Abstract

The invention provides a method of preparing a calcium phosphate coating containing third-party beneficial ions in a microwave-assisted manner within a short time. The method comprises the following steps: microwave heating a reaction solution containing phosphate anions and calcium ions to form the calcium phosphate coating; and adding the third-party beneficial ions into the reaction solution to prepare the calcium phosphate coating containing the third-party beneficial ions. The method provided by the invention has the advantages of efficiency, low energy consumption, low investment and easiness in control and can fully coat orthopaedical or dental implantation apparatuses and stents with complex structures and the like. The obtained calcium phosphate coating containing the third-party beneficial ions can be applied to the biomedical engineering field of hard tissue repair.

Description

technical field [0001] The invention relates to the technical field of medical biomaterials, in particular to a method for rapidly preparing a calcium phosphate coating containing third-party beneficial ions. technical background [0002] Calcium phosphate has a similar chemical composition and crystal structure to the main minerals in human bones and teeth. It is the main inorganic component of human bone tissue and is a typical bioactive material. However, the mechanical properties of calcium phosphate ceramics are poor, and its bending strength and fracture toughness are lower than those of human compact bone, making it difficult to use in the bearing parts of the human body. Depositing calcium phosphate ceramic coatings on substrates composed of ceramics, metals, polymers, and composite materials can overcome the brittleness of calcium phosphate ceramics and improve the bearing capacity of implants. At the same time, the good biological activity of calcium phosphate cer...

Claims

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Application Information

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IPC IPC(8): A61L27/32A61L27/54
Inventor 周欢邓林红石晓灏张治国
Owner CHANGZHOU UNIV
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